OS X El Capitan GM Available Now, Public Release on September 30
Apple has released the GM Candidate build of OS X El Capitan for Mac users participating in the Mac Developer Beta and OS X Public Beta programs. Additionally, Apple has announced that OS X 10.11 El Capitan will be available to the general public on September 30 as as free download.
GM is short for Golden Master, indicating it is the final build in a software production cycle that will be released to the public.
In this case, the final build of OS X 10.11 arrives as 15A282b, and the download is available now from the Mac Developer Center, as well as the Software Update function of the App Store. The update download is about 2GB and requires a reboot to complete installation of.
The GM update is rolling out now for Mac users in the developer beta program and OS X 10.11 Mac Public Beta.
Downloading OS X El Capitan GM Candidate Installer
You can find the OS X El Capitan GM Candidate installer available to download through the “Purchases” tab of the App Store as seen here:
The OS X 10.11 GM Candidate install app is 6GB. If you’d like to make a bootable install drive of OS X El Capitan GM as shown here, you’d want to download the installer application to do so.
If you don’t find the update available in the Mac App Store, and it’s not shown under the “Purchases” tab, you can try refreshing the Updates tab, or using this trick to unveil the missing OS X beta updates by updating the catalog URL. Otherwise, you’d likely want to log into the Mac Developer Center and redeem a new download code from Apple.
OS X El Capitan Public Release Date is September 30
The general public will have access to OS X El Capitan as a free download on September 30.
Apple announced the release date in a creatively sneaky fashion, hiding it as an email in their keynote unveiling of the newly released Phone 6S as seen in the image below, and later clarified the download date on their website.
Developers can also find iOS 9 GM available to download now, alongside iOS 9.1 beta 1 for their iPhone, iPad, and iPod touch.